Afr

[muhannad2009]

hi

how can I make the idle AFR as lean as I can I want to see my wideband read above 17 @ idle
please can you tell me what I have to change in my tuning ??

thanx

[granatl]

I think you would have to disable closed loop and the LTFT's (permanently), then pull down the values for the MAF frequencies around idle and/or the relevant VE. I've never tried this though, so maybe others will chime in.
I believe I once had my Grand National idling that lean on e85, but it was rough [and done purely by accident]

[R8SVton]

hi

how can I make the idle AFR as lean as I can I want to see my wideband read above 17 @ idle
please can you tell me what I have to change in my tuning ??

thanx

You need to decrease all values in the Bank 1 and Bank 2 02 Rich/Lean vs Airflow by 100mV at a time til you get your target in the ENGINE - FUEL CONTROL - OL&CL Tab, but you DONT want to go any leaner than 16.5:1
Hope that helps.

[muhannad2009]

thank u guys so much